Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL59196CpublicationCriticalpatent/NL59196C/xx
H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
H01J37/02—Details
H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
H01J37/10—Lenses
H01J37/14—Lenses magnetic
H01J37/141—Electromagnetic lenses
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Physics & Mathematics
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Electromagnetism
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Chemical & Material Sciences
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Analytical Chemistry
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Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like
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